I had 5 tests all with faint positives (16th, 17, 18th, 19th and 20th of April) that kept getting darker over the days and the darkest being what I thought was 6dpo since i THOUGHT I o'd around 13th-15th and I took them as BFPs.
I then started my period early on the 24th (Due on the 29th) a few days after my BFPs and figured they we're false BFPs or chemical pregnancy and went about my days.
Last night I went to the ER for serve pains. I found out I was indeed pregnant and would have conceived on the 9th of April making me around 11dpo when I tested and got a clear BFP on the 20th of April.
I would have been due Dec 31st 2013 :( But I have lost this pregnancy at 4 weeks so early yet so painful! I wanted to check it wasnt eptopic or anything and no it wasn't, there wasnt even a dot on screen to see just the start of a yolk sac.